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      07-08-2019, 08:51 AM   #23
studio54
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Drives: n54 135
Join Date: Feb 2017
Location: belgium

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Thread revival !

Same here, since having my car (n54 135i) i always noticed this behaviour and wonder if it's normal or not ?

Definitely not a 29.2 issue cause it's MHD tuned so it get rid of this problem.

During warming period without WOTing or red lining it (under 3000rpms), the low end torque seems to have more power, more responsiveness and quicker spool than when warmep up.... DTC activates, eventully tyres spins while barely pressing the throttle pedal. Once it's warmed, it just feels laggier. The power is there, but in mid and high end. This initial low rpm peppy feeling is not there anymore.

Are we in the same boat, every n54 does that? or is there any issue ?

Any possibility it could be a bad (partially clogged?) mid catalytic converter? I know these stuff starts to really work when it's warmed.

If it's related to air temp in the combustion chamber, does a walnut blasting helps? (never done it yet, but plan to do it)
Appreciate 0
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